Here is one I need some help on. I have seen countless iron farm animals in my travels but I cant remember seeing one with wheels. It is just under two inches from tail to snout, and the second pic shows that it was clearly cast to accommodate the axles. I was wondering if anyone could give me any info on this piece.

The photography stand is a waxed cardboard box that once contained one pint of Pure Cream. Its past is also in question. The third picture shows the patent stamp on its bottom.